公开(公告)号：US5382902A

公开(公告)日：1995-01-17

申请号：US985645

申请日：1992-12-07

申请人： Yo Taniguchi ,  Etsuji Yamamoto

发明人： Yo Taniguchi ,  Etsuji Yamamoto

IPC分类号： A61B5/055 ,  G01R33/32 ,  G01R33/563 ,  G01R33/567 ,  G01V3/00

CPC分类号： G01R33/5676

摘要： A magnetic resonance imaging method for obtaining an image of an object laid in a space in which a static magnetic field is applied, so as to substantially eliminate motional artifacts. The method includes sequentially measuring a plurality of magnetic resonance views with a plurality of encodings by repeating a measurement sequence of exciting nuclear spins in said object, applying a phase-encoding field gradient along a first direction with programmed time integral to encode the excited spins, and detecting the encoded spins in the presence of a readout field gradient along a second direction to generate a magnetic resonance view so that measurements of magnetic resonance views with at least low-order encoding are obtained during the repetition of the measurement sequence. Thereafter respective magnetic resonance views are subjected to a first Fourier transformation so as to generate a plurality of projection views with a plurality of encodings forming a data matrix in a hybrid domain, displacements in respective projection views due to motion of the object are corrected using displacement information obtained from projection views with low-order encodings so as to generate a corrected data matrix in the hybrid domain, and the corrected data matrix is subjected to a second Fourier transformation so as to generate the image of the object.

摘要翻译： 一种磁共振成像方法，用于获得放置在施加静磁场的空间中的物体的图像，以便基本上消除运动伪像。 该方法包括通过重复所述物体中激发的核自旋的测量序列来顺序地测量具有多个编码的多个磁共振视图，沿着第一方向施加相位编码场梯度以编程的时间积分来编码激励的自旋， 以及在沿着第二方向存在读出场梯度的情况下检测编码的旋转以产生磁共振视图，使得在重复测量序列期间获得具有至少低阶编码的磁共振视图的测量。 然后对各磁共振视图进行第一傅里叶变换，以便在混合域中产生多个形成数据矩阵的编码的多个投影视图，由于对象的运动而在各个投影视图中的位移使用位移进行校正 从具有低阶编码的投影视图获得的信息，以便在混合域中产生校正数据矩阵，并且对经校正的数据矩阵进行第二傅立叶变换，以便生成对象的图像。

公开(公告)号：US5221898A

公开(公告)日：1993-06-22

申请号：US798907

申请日：1991-11-27

申请人： Kenji Takiguchi ,  Hidemi Shiono ,  Etsuji Yamamoto ,  Ryuichi Suzuki

发明人： Kenji Takiguchi ,  Hidemi Shiono ,  Etsuji Yamamoto ,  Ryuichi Suzuki

IPC分类号： G01R33/561 ,  G01R33/563

CPC分类号： G01R33/56308 ,  G01R33/5616 ,  G01R33/56316

摘要： This invention relates to a ultra-high speed nuclear magnetic resonance fluid imaging method for selectively reconstructing projected images of a fluid from an echo train generated by the use of a readout gradient magnetic field which inverses periodically. A pulse-like encoding gradient magnetic field is used in combination with a readout gradient magnetic field which inverses periodically, so as to generate an echo train containing alternately echoes whose phase change of magnetization due to a flow is emphasized and echoes whose phase change of magnetization due to the flow is corrected, and subjected sequentially to phase encoding. A data train containing only the echoes whose phase change of magnetization due to the flow is emphasized and a data train containing only the echoes whose phase change of magnetization due to the flow is corrected are formed from sampling data of these echoes, respectively, and two images are then obtained by subjecting them individually to two-dimensional Fourier transform. Both of these images are then subtracted.

摘要翻译： 本发明涉及一种超高速核磁共振流体成像方法，用于从通过使用周期性反转的读出梯度磁场产生的回波序列中选择性地重构流体的投影图像。 脉冲式编码梯度磁场与周期性反转的读出梯度磁场结合使用，以便生成包含交替回波的回波串，该回波串被强调由于流动引起的磁化相位变化，并且回波其磁化相位变化 由于流程被校正，并且顺序地进行相位编码。 仅包含其中由于流动引起的磁化相位变化的回波的数据列被分别由这些回波的采样数据分别形成，并且仅包含校正由流动引起的磁化相位变化的回波的数据列分别形成 然后通过对它们进行二维傅立叶变换而获得图像。 然后将这两个图像相减。

公开(公告)号：US5107216A

公开(公告)日：1992-04-21

申请号：US473428

申请日：1990-02-01

申请人： Masao Yabusaki ,  Etsuji Yamamoto ,  Hiroyuki Takeuchi ,  Hideki Kohno

发明人： Masao Yabusaki ,  Etsuji Yamamoto ,  Hiroyuki Takeuchi ,  Hideki Kohno

IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/343 ,  G01R33/36

CPC分类号： G01R33/3657 ,  G01R33/343

摘要： In an imaging apparatus using the nuclear magnetic resonance, a solenoid coil and a slot-resonator coil are combined with each other so as to constitute a quadrature-phase detection probe. In order to operate the slot-resonator coil at low frequency, inductance is added to the slot-resonator coil. Further in order to cut the coupling between a transmitting coil and a receiving coil in a cross coil system, a capacitor together with the added inductance to form a resonant circuit is connected in parallel to the inductance. A favorable probe can be obtained in a vertical-magnetic field type imaging apparatus.

摘要翻译： 在使用核磁共振的成像装置中，螺线管线圈和缝隙谐振器线圈彼此组合以构成正交相位检测探针。 为了以低频操作缝隙谐振器线圈，电感被加到缝隙谐振器线圈上。 此外，为了切断交叉线圈系统中的发送线圈和接收线圈之间的耦合，电容器与附加的电感一起形成谐振电路并联连接到电感。 可以在垂直磁场型成像装置中获得良好的探针。

公开(公告)号：US5065097A

公开(公告)日：1991-11-12

申请号：US500901

申请日：1990-03-29

申请人： Tatsuo Nozokido ,  Etsuji Yamamoto ,  Hideki Kohno

发明人： Tatsuo Nozokido ,  Etsuji Yamamoto ,  Hideki Kohno

IPC分类号： A61B5/055 ,  G01R33/48 ,  G01R33/485 ,  G01R33/565

CPC分类号： G01R33/56527 ,  G01R33/485

摘要： A testing method and apparatus by use of nuclear magnetic resonance measure, at timings influenced and not influenced from chemical shift, nuclear magnetic resonance signals taken from a sample to be tested at least one of whose values of permeability and chemical shift is known and a reference sample both of whose values of permeability and chemical shift and their spatial distribution are uniform thereby to acquire four items of image vector information. Further, the testing method and apparatus take phase differences between the items of image vector information to separately extract the phase component influenced by the permeability distribution and the phase component influenced from the chemical shift.

公开(公告)号：US4875010A

公开(公告)日：1989-10-17

申请号：US174424

申请日：1988-03-28

申请人： Koichi Yokosawa ,  Etsuji Yamamoto ,  Hideaki Nakane ,  Masao Yabusaki ,  Yukiko Ogura

发明人： Koichi Yokosawa ,  Etsuji Yamamoto ,  Hideaki Nakane ,  Masao Yabusaki ,  Yukiko Ogura

IPC分类号： A61B5/055 ,  A61B10/00 ,  G01R33/035 ,  G01R33/32 ,  G01R33/36

CPC分类号： G01R33/326 ,  G01R33/0358

摘要： In a signal detecting circuit of, for example, an NMR apparatus, a signal transmission path transmits an AC magnetic flux signal to be superposed on a DC magnetic field whose strength does not change with time during a period of signal detection. The signal transmission path comprises a superconducting closed loop including a receiving coil receiving the AC magnetic flux signal, an input coil applying the received AC magnetic flux signal as an input to a flux meter, and a variable resistor replacing part of the superconducting closed loop and having its resistance value changed in relation to a change in the strength of the DC magnetic field.

摘要翻译： 在例如NMR装置的信号检测电路中，在信号检测期间，信号传输路径传输要叠加在强度不随时间变化的直流磁场上的交流磁通信号。 信号传输路径包括超导闭环，包括接收交流磁通信号的接收线圈，输入线圈将接收到的交流磁通信号作为输入馈送到通量计，以及替代部分超导闭环的可变电阻器，以及 其电阻值相对于直流磁场强度的变化而变化。

公开(公告)号：US4853636A

公开(公告)日：1989-08-01

申请号：US141788

申请日：1988-01-11

申请人： Etsuji Yamamoto ,  Yukiko Ogura ,  Hideki Kohno

发明人： Etsuji Yamamoto ,  Yukiko Ogura ,  Hideki Kohno

IPC分类号： G01R33/54

CPC分类号： G01R33/4833

摘要： An NMR imaging method for obtaining a tomographic image of an object through two-dimensional Fourier transformation imaging. After a whole image of a predetermined slice is displayed, a given field of view having a given size and located at a given position in the image is designated. On the basis of data derived from this designation, setting values for magnetic field generators and a signal detector are arithmetically determined for limiting the region in which the NMR signal is generated and the region to be imaged, whereby local imaging of the aforementioned field of view is conducted with high resolution. Further, division of an image resulting from the imaging operation is automatically corrected by exchanging positionally the divided image blocks with each other.

摘要翻译： 一种用于通过二维傅里叶变换成像获得物体的断层图像的NMR成像方法。 在显示预定切片的整个图像之后，指定具有给定尺寸并且位于图像中的给定位置的给定视场。 基于从该指定导出的数据，算术地确定用于限制产生NMR信号的区域和要成像的区域的磁场发生器和信号检测器的设定值，由此上述视野的局部成像 以高分辨率进行。 此外，通过将分割的图像块彼此交换而自动地校正由成像操作产生的图像的划分。

公开(公告)号：US4803190A

公开(公告)日：1989-02-07

申请号：US29645

申请日：1987-03-24

申请人： Kohei Sarumaru ,  Etsuji Yamamoto

发明人： Kohei Sarumaru ,  Etsuji Yamamoto

IPC分类号： B01J23/881 ,  B01J23/88 ,  B01J23/883 ,  B01J27/192 ,  B01J37/04 ,  C07B61/00 ,  C07C45/00 ,  C07C45/35 ,  C07C45/37 ,  C07C47/22 ,  C07C51/25 ,  C07C57/05 ,  C07C67/00 ,  C07C253/26 ,  C07C255/08 ,  B01J21/00 ,  B01J23/16 ,  B01J27/18

CPC分类号： B01J23/8876 ,  B01J23/002 ,  B01J27/192 ,  C07C253/26 ,  C07C45/35 ,  C07C45/37 ,  C07C51/252 ,  B01J2523/00 ,  Y02P20/52

摘要： In the production of a Mo-Bi-Na composite oxide catalyst by the process comprising incorporating compounds as respective element sources into a composite and subjecting the composite to heating treatment in an aqueous system, bismuth oxide and/or bismuth subcarbonate are/is used as a Bi source copmpound and at least a part of the heat treatment is conducted at a temperature of 450.degree. to 600.degree. C. The activity of the catalyst is significantly improved by introducing Bi in the form of the specified water insoluble compound into the catalyst.

摘要翻译： 在制备Mo-Bi-Na复合氧化物催化剂的过程中，包括将化合物作为各元素源并入复合材料中，并使复合材料在水性体系中进行加热处理，将氧化铋和/或亚碳酸铋用作 Bi源组成，至少一部分热处理在450〜600℃的温度下进行。通过将特定的水不溶性化合物的Bi引入催化剂，催化剂的活性显着提高。

公开(公告)号：US4558425A

公开(公告)日：1985-12-10

申请号：US413821

申请日：1982-09-01

申请人： Etsuji Yamamoto ,  Kensuke Sekihara ,  Hideki Kohno ,  Shinji Yamamoto

发明人： Etsuji Yamamoto ,  Kensuke Sekihara ,  Hideki Kohno ,  Shinji Yamamoto

IPC分类号： A61B10/00 ,  A61B5/055 ,  A61B5/107 ,  G01R33/28 ,  G01R33/38 ,  G01R33/48 ,  G01R33/58 ,  G01N15/00

CPC分类号： G01R33/381 ,  A61B5/1077 ,  G01R33/28 ,  G01R33/58

摘要： In an imaging apparatus using nuclear magnetic resonance which includes apparatus for generating a static magnetic field, a linear gradient magnetic field and a radio frequency magnetic field, respectively, signal detection device for detecting the nuclear magnetic resonant signal from an object to be inspected, a computer for calculating from the detection signal an image and output device for displaying the result of calculation by the computer, the improvement wherein the size of the object to be inspected is detected by use of ultrasonic wave or light beams and a signal indicative of the detected size of the object is applied to the linear gradient magnetic field generation apparatus so as to control the intensity of the linear gradient magnetic field.

摘要翻译： 在使用核磁共振的成像装置中，分别包括用于产生静磁场的装置，线性梯度磁场和射频磁场，用于检测来自被检体的核磁共振信号的信号检测装置， 用于从检测信号计算用于显示计算机的计算结果的图像和输出装置的计算机，其中通过使用超声波或光束来检测要检查的对象的大小，以及指示检测到的信号的信号 物体的大小被施加到线性梯度磁场产生装置，以便控制线性梯度磁场的强度。

公开(公告)号：US4437136A

公开(公告)日：1984-03-13

申请号：US389075

申请日：1982-06-16

申请人： Etsuji Yamamoto ,  Kensuke Sekihara ,  Hideki Kohno

发明人： Etsuji Yamamoto ,  Kensuke Sekihara ,  Hideki Kohno

IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/389 ,  G05F7/00 ,  H01F5/00 ,  H01F7/18 ,  H01H47/00

CPC分类号： G05F7/00

摘要： An electromagnet having a current detecting device for detecting the current flowing through an electromagnet exciting coil, the output of which is utilized to control the power supplied to the coil to stabilize the current flowing through the coil; the electromagnet further including a separate power supply to supply current to the current detecting device which supplies current to the current detecting device when the electromagnet is not on working.

摘要翻译： 一种具有电流检测装置的电磁体，用于检测流过电磁激励线圈的电流，该电磁检测装置的输出用于控制提供给线圈的功率以稳定流经线圈的电流; 电磁体还包括单独的电源，以向电流检测装置提供电流，当电磁体不工作时，电流检测装置向电流检测装置提供电流。

公开(公告)号：US20050026645A1

公开(公告)日：2005-02-03

申请号：US10935034

申请日：2004-09-07

申请人： Etsuji Yamamoto

发明人： Etsuji Yamamoto

IPC分类号： H04B1/38 ,  H04Q7/20

CPC分类号： H04B1/401

摘要： A radio communication apparatus including an operator control section with at least one actuator for appointing a function setting that may be recorded in a first data structure and thereafter detected and recorded in a second data structure wherein a microprocessor may compare the two settings and issue a modification notification indicating that the initial setting has been changed.

摘要翻译： 一种无线电通信装置，包括具有至少一个致动器的操作员控制部分，用于指定可以记录在第一数据结构中的功能设置，然后以第二数据结构检测和记录，其中微处理器可以比较两个设置并发布修改 指示初始设置已更改的通知。